{"id":103359,"date":"2024-07-16T14:34:38","date_gmt":"2024-07-16T12:34:38","guid":{"rendered":"https:\/\/www.linseis.com\/sem-categoria\/tempo-e-temperatura-de-inducao-da-oxidacao\/"},"modified":"2026-01-12T09:45:45","modified_gmt":"2026-01-12T08:45:45","slug":"tempo-e-temperatura-de-inducao-da-oxidacao","status":"publish","type":"post","link":"https:\/\/www.linseis.com\/pt-pt\/conhecimentos\/tempo-e-temperatura-de-inducao-da-oxidacao\/","title":{"rendered":"Tempo e temperatura de indu\u00e7\u00e3o da oxida\u00e7\u00e3o"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"103359\" class=\"elementor elementor-103359 elementor-7639\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9eb8745 e-flex e-con-boxed e-con e-parent\" data-id=\"9eb8745\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8a9139e elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"8a9139e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Oxida\u00e7\u00e3o<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4058c67 elementor-toc--minimized-on-tablet elementor-invisible elementor-widget elementor-widget-table-of-contents\" data-id=\"4058c67\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h2&quot;],&quot;exclude_headings_by_selector&quot;:[],&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\t\u00cdndice\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__4058c67\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__4058c67\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__4058c67\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ffaef65 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"ffaef65\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>A oxida\u00e7\u00e3o \u00e9 um processo qu\u00edmico que ocorre quando se perdem electr\u00f5es de uma mol\u00e9cula, \u00e1tomo ou i\u00e3o. No contexto da calorimetria, a oxida\u00e7\u00e3o \u00e9 frequentemente analisada como uma an\u00e1lise t\u00e9rmica, que envolve a queima ou decomposi\u00e7\u00e3o de subst\u00e2ncias para libertar energia sob a forma de calor. <\/p><p><a href=\"https:\/\/www.linseis.com\/methoden\/dynamische-differenz-kalorimetrie\/\">\n  <strong>A Calorimetria Explorat\u00f3ria Diferencial (DSC)<\/strong>\n<\/a> \u00e9 uma t\u00e9cnica que pode ser utilizada para caraterizar este processo, uma vez que mede o fluxo de calor associado \u00e0 oxida\u00e7\u00e3o de uma amostra durante o aquecimento ou arrefecimento. O princ\u00edpio subjacente \u00e0 medi\u00e7\u00e3o da oxida\u00e7\u00e3o com a DSC (Calorimetria Explorat\u00f3ria Diferencial) baseia-se na natureza exot\u00e9rmica das reac\u00e7\u00f5es de oxida\u00e7\u00e3o.<br>Na DSC, a oxida\u00e7\u00e3o pode ser estudada de forma isot\u00e9rmica ou n\u00e3o isot\u00e9rmica. Para estudos de oxida\u00e7\u00e3o isot\u00e9rmica, a temperatura do cadinho da amostra DSC \u00e9 definida a uma temperatura constante e a oxida\u00e7\u00e3o da amostra \u00e9 monitorizada ao longo do tempo.  <\/p><p>O in\u00edcio da oxida\u00e7\u00e3o \u00e9 normalmente indicado pelo aparecimento de um pico exot\u00e9rmico na curva DSC, que corresponde \u00e0 liberta\u00e7\u00e3o de calor \u00e0 medida que a amostra oxida. O tempo em que ocorre o pico exot\u00e9rmico \u00e9 designado por tempo de indu\u00e7\u00e3o da oxida\u00e7\u00e3o (OIT) e \u00e9 uma medida da resist\u00eancia da amostra \u00e0 oxida\u00e7\u00e3o. O m\u00e9todo \u00e9 ilustrado na Fig. 1.   <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7a04fb3 elementor-widget__width-initial elementor-invisible elementor-widget elementor-widget-image\" data-id=\"7a04fb3\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"484\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Representation-of-an-oxidation-induction-time-measurement-01-1024x620.png\" class=\"attachment-large size-large wp-image-31121\" alt=\"\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Representation-of-an-oxidation-induction-time-measurement-01-1024x620.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Representation-of-an-oxidation-induction-time-measurement-01-300x182.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Representation-of-an-oxidation-induction-time-measurement-01-768x465.png 768w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Representation-of-an-oxidation-induction-time-measurement-01-1536x930.png 1536w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Representation-of-an-oxidation-induction-time-measurement-01-2048x1240.png 2048w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figura 1: Ilustra\u00e7\u00e3o de uma medi\u00e7\u00e3o do tempo de oxida\u00e7\u00e3o-indu\u00e7\u00e3o [3, p. 8]<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f3a894e elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"f3a894e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Nos estudos de oxida\u00e7\u00e3o n\u00e3o isot\u00e9rmica, a temperatura da c\u00e9lula DSC \u00e9 aumentada a uma taxa constante e a oxida\u00e7\u00e3o da amostra \u00e9 monitorizada em fun\u00e7\u00e3o da temperatura.<\/p><p>O dispositivo DSC detecta um pico exot\u00e9rmico na curva DSC quando uma amostra oxida e liberta calor. A temperatura a que o pico ocorre \u00e9 referida como a temperatura de in\u00edcio da oxida\u00e7\u00e3o (OOT). <\/p><p>O m\u00e9todo \u00e9 apresentado na Fig. 2. O OOT \u00e9 uma medida da estabilidade t\u00e9rmica da amostra e \u00e9 utilizado para avaliar a estabilidade oxidativa dos materiais.  <\/p><p>Resumindo, medindo o tempo de indu\u00e7\u00e3o da oxida\u00e7\u00e3o (OIT) ou a temperatura de in\u00edcio da oxida\u00e7\u00e3o (OOT) a diferentes temperaturas, a energia de ativa\u00e7\u00e3o para a oxida\u00e7\u00e3o pode ser determinada, o que fornece informa\u00e7\u00f5es sobre a estabilidade t\u00e9rmica da amostra.<\/p><p>A DSC tamb\u00e9m pode ser utilizada para avaliar os efeitos dos antioxidantes e outros aditivos na estabilidade oxidativa das amostras, o que \u00e9 importante para a sua qualidade e prazo de validade.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-80d22bb elementor-widget__width-initial elementor-invisible elementor-widget elementor-widget-image\" data-id=\"80d22bb\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"513\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Illustrated-of-an-oxidation-onset-temperature-measurement-01-1024x656.png\" class=\"attachment-large size-large wp-image-31125\" alt=\"\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Illustrated-of-an-oxidation-onset-temperature-measurement-01-1024x656.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Illustrated-of-an-oxidation-onset-temperature-measurement-01-300x192.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Illustrated-of-an-oxidation-onset-temperature-measurement-01-768x492.png 768w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Illustrated-of-an-oxidation-onset-temperature-measurement-01-1536x984.png 1536w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Illustrated-of-an-oxidation-onset-temperature-measurement-01-2048x1313.png 2048w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figura 2: Ilustra\u00e7\u00e3o de uma medi\u00e7\u00e3o da temperatura de in\u00edcio da oxida\u00e7\u00e3o [3, p. 7]<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3112811 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"3112811\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>A DSC tamb\u00e9m pode ser utilizada para determinar a energia de ativa\u00e7\u00e3o para a oxida\u00e7\u00e3o, que \u00e9 uma medida da energia necess\u00e1ria para iniciar o processo de oxida\u00e7\u00e3o.<br><br>A energia de ativa\u00e7\u00e3o pode ser calculada utilizando a equa\u00e7\u00e3o de Arrhenius, que relaciona a velocidade de uma rea\u00e7\u00e3o qu\u00edmica com a temperatura a que esta ocorre. A energia de ativa\u00e7\u00e3o para a oxida\u00e7\u00e3o pode ser determinada medindo o tempo de indu\u00e7\u00e3o da oxida\u00e7\u00e3o (OIT) ou a temperatura de in\u00edcio da oxida\u00e7\u00e3o (OOT) a diferentes temperaturas e tra\u00e7ando os dados num diagrama de Arrhenius. <br><br>O declive da linha resultante \u00e9 utilizado para calcular a energia de ativa\u00e7\u00e3o para a oxida\u00e7\u00e3o. A curva DSC pode ser analisada para determinar v\u00e1rios par\u00e2metros relacionados com a oxida\u00e7\u00e3o, por exemplo, a temperatura inicial, a temperatura de pico e o calor de oxida\u00e7\u00e3o. <\/p><p>Tanto o OIT como o OOT s\u00e3o par\u00e2metros importantes para avaliar a estabilidade \u00e0 oxida\u00e7\u00e3o dos materiais, e a efic\u00e1cia dos antioxidantes pode ser comparada, especialmente em pol\u00edmeros.<br><br>Um OIT mais longo ou um OOT mais elevado indica uma maior estabilidade oxidativa e resist\u00eancia \u00e0 degrada\u00e7\u00e3o. Os factores que podem afetar a precis\u00e3o das medi\u00e7\u00f5es DSC para a oxida\u00e7\u00e3o incluem a prepara\u00e7\u00e3o da amostra, a instrumenta\u00e7\u00e3o e as condi\u00e7\u00f5es experimentais, como a taxa de aquecimento e a atmosfera. <br><br>A an\u00e1lise t\u00e9rmica pode ser utilizada para estudar a oxida\u00e7\u00e3o de metais numa atmosfera que contenha oxig\u00e9nio, onde se forma um \u00f3xido met\u00e1lico e o aumento de massa dependente da temperatura ou do tempo pode ser observado utilizando t\u00e9cnicas como a TGA.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-75b6b43 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"75b6b43\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Decomposi\u00e7\u00e3o durante a oxida\u00e7\u00e3o<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a473acd elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"a473acd\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tA decomposi\u00e7\u00e3o \u00e9 a quebra de um composto em mol\u00e9culas ou elementos mais pequenos [1, sec\u00e7\u00e3o 3.4.4]. Se n\u00e3o estiver presente nenhum agente oxidante, como o oxig\u00e9nio atmosf\u00e9rico, durante uma medi\u00e7\u00e3o, a pir\u00f3lise inicia-se a uma temperatura dependente da subst\u00e2ncia. O sistema material \u00e9 dividido pela entrada de calor e decomp\u00f5e-se. Num DSC, isto pode ser realizado utilizando um g\u00e1s de amostra inerte, como o azoto, pois, caso contr\u00e1rio, pode ocorrer oxida\u00e7\u00e3o que prejudica este processo. A decomposi\u00e7\u00e3o \u00e9 um processo endot\u00e9rmico.    \t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-610be95 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"610be95\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Referencias:<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5123bb7 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"5123bb7\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ol><li><a href=\"https:\/\/www.researchgate.net\/publication\/251272345_A_Chemical_Kinetics_Model_to_Predict_Diesel_Engine_Performance_Part_II_Bench-Test_Procedures\" target=\"_blank\" rel=\"noopener\">Stephen M. Hsua e Chun-I Chenb, Um modelo de cin\u00e9tica qu\u00edmica para prever o desempenho do motor diesel. Parte II. Procedimentos de teste de bancada: Tribology Letters, Vol. 14, No. 2, fevereiro de 2003. <\/a><\/li><li><a href=\"https:\/\/www.semanticscholar.org\/paper\/Thermal-Analysis-of-Polymeric-Materials-Wunderlich\/7e750078a46f27f7dd7721b0fba915de703580ea\" target=\"_blank\" rel=\"noopener\">B. Wunderlich, Thermal Analysis of Polymeric Materials (An\u00e1lise t\u00e9rmica de materiais polim\u00e9ricos). Berlim, Heidelberg: Springer-Verlag Berlin Heidelberg, 2005. <\/a><\/li><li><a href=\"https:\/\/www.hanser-fachbuch.de\/fachbuch\/artikel\/9783446226739\" target=\"_blank\" rel=\"noopener\">G. W. Ehrenstein, G. Riedel e P. Trawiel, Thermal analysis of plastics: Theory and practice. Munique: Hanser, 2004. <\/a><\/li><li>Pl\u00e1sticos &#8211; Calorimetria Explorat\u00f3ria Diferencial (DSC), ISO 11357-6, 2008.<\/li><li><a href=\"https:\/\/www.researchgate.net\/publication\/374974164_Differential_scanning_calorimetry_as_a_tool_to_assess_the_oxidation_state_of_cold-pressed_oils_during_shelf-life\" target=\"_blank\" rel=\"noopener\">Mahbuba Islam, Anna Kaczmarek, and Jolanta Tomaszewska-Gras, Differential scanning calorimetry as a tool to assess the oxidation state of cold-pressed oils during shelf-life: Journal of Food Measurement and Characterization (2023) 17:6639-6651.<\/a><\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-772380e elementor-widget elementor-widget-spacer\" data-id=\"772380e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c8b8fd2 e-flex e-con-boxed e-con e-parent\" data-id=\"c8b8fd2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>A oxida\u00e7\u00e3o \u00e9 um processo qu\u00edmico que ocorre quando se perdem electr\u00f5es de uma mol\u00e9cula, \u00e1tomo ou i\u00e3o.<\/p>\n","protected":false},"author":3,"featured_media":33182,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[654],"tags":[],"class_list":["post-103359","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-conhecimentos"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/posts\/103359","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/comments?post=103359"}],"version-history":[{"count":0,"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/posts\/103359\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/media\/33182"}],"wp:attachment":[{"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/media?parent=103359"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/categories?post=103359"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linseis.com\/pt-pt\/wp-json\/wp\/v2\/tags?post=103359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}